Filter



(N0 Mqdel.)

FILTER.

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NITED STATES J UNIUS A. BOWDEN, OF DETROIT, MICHIGAN.

FILTER.

SPECIFICATION forming part of Letters Patent No. 601,392, dated March29, 1898.

Application filed August 4, 1897- erial No. 647,068. (No model.)

To aZZ whom it may concern.-

Be it known that I, J UNIUS A. Bowman, a citizen of the United States,residing at Detroit, in the county of VJayne and State of Michigan, haveinvented certain new and usef ul Improvements in Filters, of which thefollowing is a specification, reference being bad therein to theaccompanying drawings.

The invention consists in the construction of a filter-tube and in theconstruction, arrangement, and combination of the various parts, all asmore fully hereinafter described and claimed.

In the drawings, Figure l is a vertical central section through myimproved filter. 2 is a cross-section thereof. Fig. 3 is a perspectiveView of the filter-tube, showing the manner of cleaning the same; andFig. 4 is an end elevation thereof.

In the prior state of the art it has been customary to make filter-tubesof suitable porous material, through which the water is filtered. It hasbeen universal, so far as I know, to make such tubes cylindrical;

In that class of filter tubes in which cementitious material or softporous stone'is used it is customary to clean such filter-tubes eitherby using a brush to scour off the sediment deposited on the tube or elseto use some means or machine for rotating the tube in proper relation toa cutting or trimming tool. In the use of such filter-tubes it has beenfound that if brushes are used the brush Wears oif the softer parts,leaving veins and ridges, and also wearing the tube down unevenly andcausing it to be misshapen. In fact, it is such a source of trouble asto make such tubes practically a failure. If a knife or otherscraping-tool is used on a cylindrical tube, there being nothing toguide the operator, he will get the same poor result as with.

the brush, leaving ridges of uncleaned tube and gouging out other partstoo much, so that the tube quickly becomes so out of shape that the usercannot clean it. This is especially true of such filters as are sold forhousehold use, where all classes of people of all degrees of ignorancehave such tubes to clean. I have overcome these objections by formingthe tube A with its outer'face polygonal, and provided with a series ofexterior guide-faces 0, upon which an abrasive tool may be used,

Fig. l

as shown in Fig. 3. These guide-faces not only enable any unskilledperson to apply a fiat abrasive tool or block and scrape or scour off aspecified space, but also enables the operator to see that all parts ofthat face are evenly cleaned. Nor does it effect the device if one facehas to be scraped a little harder than another. The fiat face forms abearing for the tool, which I have shown at B as composed of a stone orother abrasive substance of harder consistency than the tube. This toolI preferably form, as shown at T and U, Fig. 4, comprising two wings orparts arranged at such an angle to each other as to be guided upon twoof the faces of the tube and to thus clean two faces at each operation,besides being more perfectly guided on the tube. The result of thisconstruction of tube having an outer polygonal face and the use of anabrasive tool or scraper to be guided thereon for cleaning the same hasin effect changed this style of. filter from an objectionable and almostimpracticable device to one which is satisfactory and which can be usedby and attended to by unskilledand ignorant people.

In connection with the tube thus described I have shown a filter ofthefollowing construction:

D is a bracket adapted to be secured upon any suitable place having apin or stem D on its outer end adapted to engage in a socket E,

formed on one part of the casingF. This casing is preferably cylindricaland has a cap G. The cap has an annular rim G fitting over the top ofthe casing and suitable packing to make a water-tight joint. torilyadjustable on the casin g and is secured by means of a clamping-screw I,passing through the bail and impinging upon a head or bearing J on thecap.

To remove the cap, all that is required is to loosen the screw I andswing the bail H backward, when the cap'can be removed and with it thefilter-tube A, which is connected thereto by means of the bolt K,passing centrally It is rotathrough the tube and having a suitableclamp- The water is filtered through the tube, enters the centralpassage therein, and thence passes into a chamber 0 in the cap,fromwhich a spout P projects. This spout may be turned at any desired angleto the support for the casing by suitable rotary adj ustment'of the cap.a

The lower end of the casing is curved so that the sediment will settleto a single point and may be drawn out through the bottom by opening thevalve B. This valve is fitted in a valve-casing S, and is preferablyprovided with a hollow stem having lateral ports leading from thevalve-casing into thestem, as plainly shown in Fig. 1.

This construction of filter-case and cap is simple and efficient, and isparticularly adapted for ho use use, as its simplicity of structure Ienables any one able to loosen the screw I to remove the filter-tube forcleaning purposes.

It will be seen that the filter-tube is carried by the cap, which alsocarries the filteredi water chamber. Thusin removing the filtertube forcleaning purposes it is never neces- T sary to break the joint betweenthe outer and inner chamber having the filtered and unfil- Z teredwater. The cap carries the filter-tube and the bail and its screw aresupported on the casing, so that there are no loose parts apt j to belost. The cap also forms, if desired, a handle by means of which thefilter-tube may be lifted or held.

A new tube may be applied to the cap by simply removing the nut L andthe tube, replacing the tube with a new one and replacing the nut.

WVhat I claim as my invention isv I 1. In a portable filter, thecombination of the casing,a cap havingafiltered-water chamber therein, afilter-tube clamped upon the cap, so as to be movable therewith, a tightjoint about the said chamber, a bail hinged and carried by the casing,and a clamping device on the bail adapted to clamp the cap cured to thecap, the hollow filter-tube having its central passage-way connectedwith the chamber in the cap, a movable bail supported on the casingextending across the cap and a clamping-screw on the bail engaginga heador bearing on the cap, substantially as described. 7

3. The combination with a filtering-body of porous stone or the like,presenting a plurality of plane faces, of an abrasive implementpresenting one or more plane faces, corresponding to a face or faces ofthe filter-stone, whereby the filtering-body may be cleaned by theimplement, substantially as described.

4. The combination with a filter-tube of soft porous stone orcement-itious material, having a series of flat guide-faces formed onthe outer face thereof, of a scouring or abrasive tool having its innerface formed at an angle corresponding to the angle of two faces of thetube, whereby the tool is guided thereon while being reciprocated toclean the same as and for the purpose described;

In testimony whereof I affix my signature in presence of two witnesses.

JUNIUS A. BQWDEN.

Witnesses: I

JAMES WHITTEMORE, OTTO F. BARTHEL.

